Refuse-burner.



E. E. FITZGERALD.

REFUSE BURNER.

APPLICATION FILED APR; I8, 1914.

Patented May 18, 1915.

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WORKS, 0F MUSKEGON, MICHIGAN, A COOBATION OF MICHIGAN.

REFUSE-BURNER.

Specification of Letters Patent.

Patented May s, 1915.

Application filed April 18, 1914. Serial no. 832,724.

Tocll whom it may concern Be it known that-I EDWARD E. FITZGER- ALD, a citizen of the U nited States of America, residing--- at Mind'en, in the parish of Webster and State of Louisiana, have mvented certain new and useful Improve ments in Refuse-Burners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in refuse burners, and its object is to enlarge the grate therein so that a greater draft will be provided for the burning substance, and to protect the lining of the burner from extreme heat and wear from slabs and refuse coming to contact with the same; provide a device simple and substantial in construction, and to provide the same with various novel features of construction andarrangement as hereinafter more fully described and particularly pointed out 111 the claims.

As ordinarily constructed refuse burners are cylindrical in shape and provided with a flat horizontal grate at their lower end, the draft to such grate being admitted through certain passages beneath the same. The depth of the burning substance on the grate must be shallow to permit the air to pass therethrough, and consequently the capacity of a burner of this type is materially restricted.

The object of my invention is to greatly increase the durability and burning capacity of a burnerof a given diameter by onlarging the grate surface thereof and the draft thereto, this being accomplished by providing in addition to the bottom rate an inclined side grate resembling in mm an inverted truncated cone and air passages through the exterior wall of the burner loading to the annular space between the said wall and the side grate.

The preferred construction and arrangement of this invention is shown in the accompanying drawings, in which:-

Figure 1 is a sectional plan of the refuse burner having the newly inventedgrate embodied therein, said section being taken on the line 1+1 of Fig. 2; Fig. 2 is a vertical section on the line 22 of Fig. 1; and Fig.

municating with the open air. are provided by which the passages 12 may be closed or opened at will to control the ingress of air therethrough.

The bottom grate 4 at the periphery is supported upon the base 2 of the burner at the inner edge on a support 3 and covers theannular chamber 3, the said grate ,;preferably being annular and formed of a'plurality of segments.

The exterior diameter of the grate 4 is'less than the internal diameter of the burner, which makes it possible to arranga series of side grate se ments 6 extending from the periphery o the grate 4 inclined upward and outward toward the cylindrical wall 1 of the burner. The lower ends of the segments 6 either engage a retaining lug 5 formed integral with the grate 4, as shown in Fig. 2, or each isprovided with a recess in the lower end of its strengthening web which receives a lug 5* on the grate 4, as illustrated in Fig. 3. The upper ends of the segments 6 are supported and retained in the proper position relative to each other by a ring 7 which surrounds them and is provided with a rib 8'on its inner surface which enters notches in the strengthening web of each segment to support the ring in place. The ring 7 is preferably smaller than the internal diameter of the burner so that it may expand when sub: jected to the heat of the burning refuse. The side grate thus formed leaves an annular chamber triangular in cross section between it and the side walls of the burner and radial passages 11 provided with doors 9 admit air from the exterior to this chamber from which it passes through the openings in the grate to supply the necessary draft. This opening between upper end of grates and lining admits cold air that forces the heat to the center of the burner and ing a plurality of radial passages 12 com- I Doors 10 protects the side wall orilining from heat and protects the arches over the draft doors from heat and expansion cracks.

It is obvious that a grate of this form will greatly increase the burning capacity of a refuse burner as the material may be piled anuoh deeper in the device and air will besupplied to it through the side grates, as well as through the ordinary bottom grate, thus consuming a larger quantity of refuse in the same time than could be done with the old style having bottom grates only. The

side grates also receive the shock or thrust,

of slabs and refuse instead of the brick lining, thus protecting the latter. 'This construction also permits the side grate to be added to a burner built with bottom-grate only, as ordinarily constructed, and may be-.

added thereto at any time. When applied to an old construction in which the bottom grate 4 is not provided with the retaining lug 5 or 5*, a metallic ring having such a lug thereon may be laid upon the grate and .with the wall of the chamber.

2. A refuse burner having avertical cylindrical chamber, an annular grate formed of a plurality of segments, each supported upon the bottom of the burner a truncated conical grate composed of segments inclined upward and outward from the annular grate toward the wall of the chamber, a band surrounding the upper ends of said last named segments, and means for admitting air to the grates.

3. A refuse burner comprising a vertical usages cylindrical chamber, an annular ash pit below the same, an annular grate above the ash pit, a segmental truncated conical grate supported on the outer margin of the annular grate, and a ring surrounding and supporting the upper part of the conical grate and supported thereby out of contact with the wall of the chamber.

4:. A refuse burner comprising an annular ash pit, a vertical cylindrical chamber above the ash pit and of greater diameter than the same, a horizontal segmental grate having lugs near its outer margin, a segmental truncated conical grate engaging and held in place by the lugs at its lower end, a ring surrounding the upper end of said conical grate and having an inwardly projecting rib engaging recesses in the conical grate, said ring being of less diameter than the interior of the chamber and spaced apart therefrom.

5. A refuse burner comprising an annular ash pit having radially disposed air inlet openings, a vertical cylindrical chamber of greater diameter than the ash pit and having radially disposed air inlet openings above the level of the ash pit, a segmentat annular grate horizontally disposed above the ash pit and having lugs near its outer margin, a truncated conical segmental grate above the annular grateand having recesses at its lower end to receive the lugs and recesses near its upper end, and a ring surrounding the upper end of the conical grate and having an inwardly projecting rib engaging the upper recesses in the conical grate, whereby the ring supports the said grate and the grate supports the ring.

In testimony whereof I aflix my signature in presence of two witnesses.

' EDWARD E. FITZGERALD. Witnesses:

J. O. LOONEY, B. J. RAFFERTY. 

